package com.tensquare.article.interceptor;

import io.jsonwebtoken.Claims;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import util.JwtUtil;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class JwtInterceptor implements HandlerInterceptor {
    @Autowired
    private JwtUtil jwtUtil;

    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String header = request.getHeader("Authorization");
        if(header!=null&&!"".equals(header)){
            if(header.startsWith("Bearer ")){
                String token = header.substring(7);
                try{
                    Claims claims = jwtUtil.parseJWT(token);
                    String roles = (String) claims.get("roles");
                    if(roles!=null&&"admin".equals(roles)){
                        request.setAttribute("claims_admin",claims);
                    }
                    if(roles!=null&&"user".equals(roles)){
                        request.setAttribute("claims_user",claims);
                    }
                }catch (Exception e){
                    throw new RuntimeException("令牌不正确！");
                }
            }
        }
        return true;
    }

}
